Eligibility Criteria

Male or female participants of any age.

Inclusion Criteria:
- A combined deformity of <30 degrees = group 1
- A combined deformity of >30 degrees = group 2
- Patient is willing to consent to participate in the study
- Patient is available for follow-up through at least 2 years but preferably 5 years
- Patient has met acceptable preoperative medical clearance and is free of or treated
for medical conditions that would pose excessive operative risk
- Patients who are fluent in English and are able to understand their role in a
clinical trial
Exclusion Criteria:
- Active, local infection or systemic infection
- Fibromyalgia patients
- Patients whom, as judged by the surgeon, are not capable of understanding the
informed consent or the requirements of the protocol and or are reasonably unlikely
to be compliant with the prescribed routine and the follow-up evaluation schedule